You might want to go ahead and impliment the Preload.
As others may have problems,
What it is. The browser does not see the rollover until the hover,
the delay is the image downloading.
If it is on the page somewhere else it will be in the cache on your computer.

Also you can hide images for the next page on the current page with the 1x1px.
So when the next page comes up it has little delay.

Try to put the preload load at the bottom of the page. So it does not slow down the page content load speed.

Although a lot of people devote their energy toward marketing for specific industries, there are some basic principles that can be applied to any sector imaginable. We’ll look at four steps to take and examine how those steps were put into action fo…